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Pump infusion system

  • US 5,053,031 A
  • Filed: 03/21/1989
  • Issued: 10/01/1991
  • Est. Priority Date: 03/29/1988
  • Status: Expired due to Fees
First Claim
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1. An infusion system comprising a non-metallic housing sized to contain:

  • (a) a storage reservoir having inlet means leading from the exterior to the interior of the housing;

    (b) a holding reservoir in fluid communication with the storage reservoir, said holding reservoir being smaller in volume than said storage reservoir;

    (c) an elastomeric bladder means contained within the holding reservoir for maintaining the fluid located therein under continual constant pressure, said bladder means expanding with said fluid to exert said continual constant pressure;

    (d) pump means actuated by external manual pressure for moving a dosage of fluid from the storage reservoir into the holding reservoir, wherein said bladder means expands and exerts said continual constant pressure on said fluid;

    (e) an outlet port leading from the holding reservoir to the exterior of the housing; and

    (f) means for restricting the rate at which fluid discharges from the holding reservoir through the outlet port.

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